M27V256 查看數據表（PDF） - STMicroelectronics

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M27V256

256 Kbit (32Kb x 8) Low Voltage UV EPROM and OTP EPROM

STMicroelectronics 

M27V256

Table 2. Absolute Maximum Ratings (1)

Symbol

Parameter

Value

Unit

TA

Ambient Operating Temperature (3)

–40 to 125

°C

TBIAS

Temperature Under Bias

–50 to 125

°C

TSTG

Storage Temperature

–65 to 150

°C

VIO (2)

Input or Output Voltage (except A9)

–2 to 7

V

VCC

Supply Voltage

–2 to 7

V

VA9 (2)

A9 Voltage

–2 to 13.5

V

VPP

Program Supply Voltage

–2 to 14

V

Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may

cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions

above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi-

tions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant qual-

ity documents.

2. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than 20ns. Maximum DC

) voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns.

t(s 3. Depends on range.

c Table 3. Operating Modes

du Mode

E

G

A9

VPP

Q7-Q0

ro Read

VIL

VIL

X

VCC

Data Out

P Output Disable

VIL

VIH

X

VCC

Hi-Z

lete Program

VIL Pulse

VIH

X

VPP

Data In

o Verify

VIH

VIL

X

VPP

Data Out

bs Program Inhibit

VIH

VIH

X

VPP

Hi-Z

O Standby

VIH

X

X

VCC

Hi-Z

) - Electronic Signature

VIL

VIL

VID

VCC

Codes

t(s Note: X = VIH or VIL, VID = 12V ± 0.5V.

uc Table 4. Electronic Signature

rod Identifier

A0

Q7

Q6

Q5

Q4

Q3

Q2

Q1

Q0 Hex Data

P Manufacturer’s Code

VIL

0

0

1

0

0

0

0

0

20h

Obsolete Device Code

VIH

1

0

0

0

1

1

0

1

8Dh

3/15

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